How to set it up

.NET Framework

Firefox and Opera fix for .NET ClickOnce

For Firefox, you only have to download FFClickOnce to use .NET ClickOnce apps.

But for Opera, I have absolutely no idea how to get ClickOnce working on that piece of shit, but this is what I came up with in Google:

Opera (tested with the latest version - 9.51) Tools->Preferences->Downloads->Add
Write the following values:
MimeType: application/x-ms-application
Extension: application
Select Open With Other Application: and write: explorer.exe
Check "Pass Web Address Directly To The Application "

ROMS

Just download this 2df ROM pack, it has most of the best fighting games and coop games.